<template>
  <div class="login_body">
    <div class="bg" />
    <div class="box">
      <div class="title">智慧园区-登录</div>
      <!-- 1.绑定要校验的数据:model，2.设置校验的规则:rules -->
      <el-form ref="form" :model="userInfo" :rules="rules">
        <el-form-item
          label="账号"
          prop="username"
        >
          <el-input v-model="userInfo.username" />
        </el-form-item>

        <el-form-item
          label="密码"
          prop="password"
        >
          <el-input v-model="userInfo.password" type="password" />
        </el-form-item>

        <el-form-item prop="remember">
          <el-checkbox v-model="userInfo.remember">记住我</el-checkbox>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" class="login_btn" @click="doLogin">登录</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { FORMDATA_KEY } from '@/constants/KEY'

export default {
  name: 'Login',
  data() {
    return {
      userInfo: {
        username: '',
        password: '',
        remember: ''
      },
      rules: {
        username: [
          // 1.非空校验required
          // 2.失败的提示信息message
          { required: true, message: '当前用户名不能为空', trigger: 'blur' }
        ],
        password: [
          // 自定义校验规则
          {
            required: true,
            validator: (rule, value, callback) => {
              if (value.length < 6 || value.length > 30) {
                callback(new Error('密码长度为6-30'))
              }
            }, trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    // formData取出来是一个字符串
    const formData = JSON.parse(localStorage.getItem(FORMDATA_KEY))
    if (formData) {
      this.userInfo = {
        ...this.userInfo,
        ...formData
      }
    }
  },
  methods: {
    async doLogin() {
      // 1.进行表单的统一校验，防止用户没有输入，没有出发表单校验
      await this.$refs.form.validate((valid) => {
        // valid标识是否校验通过
        if (!valid) return false
      })
      // 校验通过了
      console.log('校验通过了')
      // 2.接口vuex的action
      await this.$store.dispatch('user/doLogin', this.userInfo)
      // 3.登录成功，判断需不需要记住账号密码(ls实现，后端是不需要账号密码)
      if (this.userInfo.remember) {
        // 记住账号密码
        localStorage.setItem(FORMDATA_KEY, JSON.stringify({ username: this.userInfo.username, password: this.userInfo.password }))
      } else {
        // 清空已经记住的账号密码
        localStorage.removeItem(FORMDATA_KEY)
      }
      // 4.进入系统页面(已经存储了本地账号密码)
      this.$router.push('/')
    }
  }

}

</script>

<style scoped lang="scss">
  .login_body {
    display: flex;
  }
  .bg {
    width: 60vw;
    height: 100vh;
    background: url('~@/assets/login-bg.svg') no-repeat;
    background-position: right top;
    background-size: cover;
  }
  .box {
    margin: 200px 10% 0;
    flex: 1;
    .title {
      padding-bottom: 76px;
      font-size: 26px;
      font-weight: 500;
      color: #1e2023;
    }
    ::v-deep() {
      .ant-form-item {
        display: flex;
        margin-bottom: 62px;
        flex-direction: column;
      }
      .ant-form-item-label label {
        font-size: 16px;
        color: #8b929d;
      }
      .ant-input,
      .ant-input-password {
        border-radius: 8px;
      }
    }
  }
  .login_btn{
    width: 100%;
  }
</style>
